RPM build fix (reverted CI changes which will need to be un-reverted or made conditional) and vendor Rust dependencies to make builds much faster in any CI system.

zeroidc/vendor/cbindgen/tests/rust/array.rs

@@ -0,0 +1,7 @@
+#[repr(C)]
+enum Foo {
+    A([f32; 20])
+}
+
+#[no_mangle]
+pub extern "C" fn root(a: Foo) {}